How to install using the Update Sites

press the "add" button in the top right corner of
the installation wizard to add one of the update site URLs
listed above...

select the listed features

and follow the installation wizard

For updating the installed plugins
select Help/Check for Updates...

After installing the plugins, a user guide is included in
the Eclipse help. Choose Help/Help Contents from the menu. A
browser window will pop up and you will find the user guide as
an entry on the left side overview.